Quantitative Aptitude - Arithmetic Ability Questions

An angle is smaller than its supplementary angle by 50°. What is the measure of the angle?

If x = 1 + √2 + √3, then the value of x2-2x-4=0

The angle of elevation of the top of a tower from a point A on the ground is 30°. On moving a distance of 20 metres towards the foot of the tower to a point B, the angle of elevation increases to 60°. The height of the tower in meters is

Ticket for an adult is Rs 1000 and a child is Rs 500. One child goes free with two adults. If a group has 17 adults and 5 children what is the discount the group gets?

The points A(3,­-2), B(1,4) and C(­-2,x) are collinear. What is the value of x?

If x = 1.1, then what is the value of 4x2 -4x + 1 ?

What is the value of Tan 45° + 4/√3 Sec 60°?

If 7x + 6y = 5xy and 10x ­- 4y = 4xy, then value of x and y is